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Sulfur Resistant Drill Pipe
Description
- 产品描述
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Product Overview
Sulfur‑resistant (sulfide‑resistant) drill pipe is specifically engineered for H₂S environments, available in SS95, SS105, and SS135 grades, and compliant with NACE MR0175 / ISO 15156 standards. In sulfur‑containing oil and gas fields, conventional‑grade drill pipes are prone to sulfide stress cracking (SSC) and hydrogen‑induced cracking (HIC), making this product an essential solution. Its unique material formulation and heat‑treatment process significantly enhance its corrosion‑resistance performance.
Product Description
• Basic Information: Sulfide‑resistant drill pipe is specifically designed for oil and gas field environments containing hydrogen sulfide (H₂S). Conventional steel grades are prone to sulfide stress cracking (SSC) and hydrogen‑induced cracking (HIC) in H₂S atmospheres, which can lead to catastrophic failure. Sulfide‑resistant grades (SS95, SS105, SS135) employ specialized alloy compositions and heat‑treatment processes to resist both SSC and HIC. These products comply with NACE MR0175 / ISO 15156 standards and provide effective resistance to sulfide stress cracking in sulfur‑containing environments. Their material design and heat‑treatment procedures ensure a balanced combination of high strength and excellent corrosion resistance.
• Application scenarios: Acidic oil and gas fields containing H2S; wells requiring resistance to sulfide stress cracking; deep wells in corrosive environments; drilling operations in sulfur‑containing environments onshore and offshore.
• Product Advantages: Complies with NACE MR0175 / ISO 15156 standards; exhibits resistance to sulfide stress cracking; covers SS95, SS105, and SS135 steel grades; employs specialized material design and heat‑treatment processes; provides complete Material Test Certificates (MTC) and 100% nondestructive testing (NDT).
• Customer Case Feedback: Widely used in sour oil and gas fields containing hydrogen sulfide; customers report reliable performance under harsh drilling conditions and excellent resistance to sulfide stress cracking.
Frequently Asked Questions (FAQ)
Q: What is sulfide stress cracking (SSC)?
A: This is a failure mechanism that affects ordinary steel grades in an H2S environment.
Q: What is hydrogen‑induced cracking (HIC)?
A: Hydrogen‑induced cracking is a typical form of hydrogen embrittlement failure in carbon steels and low‑alloy steels under wet hydrogen sulfide (wet H₂S, acidic oil‑and‑gas service) conditions.
Q: What steel grades are available?
A: SS95, SS105, and SS135.
FAQs
Need more technical support?
Can the internal coating be repaired or repainted?
Based on the actual service conditions of drill pipes, locally damaged or worn internal coatings may be inspected, repaired, or re-coated.
Prior to repair, a comprehensive inspection will be conducted to assess internal corrosion, wall thickness, the condition of the existing coating, and the overall structural integrity. Following surface treatment, an FBE internal coating will be reapplied, and curing will be carried out under rigorously controlled process conditions to restore the component’s corrosion resistance, wear resistance, and fluid‑flow‑optimizing performance.
Regular inspection and timely repair of the internal coating help extend the service life of drill pipes and enhance the operational reliability of the drilling system.
How to choose the right internal coating?
Hebei Langwei offers four FBE internal coating systems with varying performance grades to meet diverse drilling requirements:
LPC3000P: Suitable for conventional oil and gas wells, water wells, and geothermal wells;
LPC3000P-HD: Suitable for deep wells, horizontal wells, extended-reach wells (ERD), and highly abrasive operating conditions;
LPC5000P: Suitable for deep wells, ultra-deep wells, and drilling operations with stringent requirements for hydraulic efficiency and service life;
LPC5000P-HD: Suitable for high‑temperature, high‑pressure (HPHT) wells, sour gas and oil wells (H₂S/CO₂), and other extreme drilling environments.
Hebei Langwei’s technical team can, based on the customer’s wellbore configuration, drilling fluid system, operating temperature, circulation rate, corrosive media, and specific drilling conditions, recommend the most suitable internal coating solution, achieving an optimal balance among product performance, service life, and overall total cost of ownership.
What internal coating systems do you offer?
LPC3000P: Suitable for conventional oil and gas wells, water wells, geothermal wells, and standard drilling operations;
LPC3000P-HD: Suitable for deep wells, horizontal wells, shale oil and gas wells, and highly abrasive operating conditions, offering superior wear resistance.
LPC5000P: Suitable for deep wells, ultra-deep wells, and high-temperature, complex operating conditions, particularly for projects with stringent requirements for wear resistance, hydraulic efficiency, and service life.
LPC5000P-HD: Designed for ultra-deep wells, high-pressure/high-temperature (HPHT) wells, sour gas wells (H2S/CO2), and other extreme drilling environments, it delivers exceptional wear and corrosion resistance as well as long-term operational reliability.
Why do drill pipes require an internal coating?
Adopting an FBE internal coating can provide the following advantages:
* Enhance corrosion resistance;
* Enhances resistance to erosion and wear;
* Reduce fluid flow resistance;
* Reduce pump pressure loss;
* Reduces scaling and deposit adhesion;
* Extend the service life of drill rods.
These advantages help improve drilling efficiency while reducing equipment maintenance costs and downtime.
What is an inner coating for drill pipes?
Compared with conventional drill pipes, coated‑in‑pipe drill pipes feature a smoother inner surface, which reduces flow resistance and pressure loss, minimizes scale buildup, enhances circulation efficiency, and effectively extends the service life of the drill pipe. They are widely used in oil and gas drilling, geothermal wells, water wells, and other complex drilling operations.
Sulfur Resistant Drill Pipe
OUR SERVICE
We offers a wealth of product support resources, including a range of technical and downloadable product manuals to product certifications.
Customization Product Catalog
We can customize high-performance drill pipe assemblies of various sizes according to customer needs.
Contact Us
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052260, East of Beikou, Yingli Town, Jinzhou County, Shijiazhuang City, Hebei Provice, China.
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